Program-controlled variable four-digit microwave one-chip integrated attenuator

A microwave monolithic, microwave attenuation circuit technology, applied in impedance networks, electrical components, multi-terminal-pair networks, etc., can solve the problems of signal loss, low actual yield, and high processing accuracy requirements.

Active Publication Date: 2012-02-15
THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the control code corresponding to the traditional attenuator is a standard binary code. The disadvantages of this attenuator are: (1) When not attenuating, the natural insertion loss of multiple bits is superimposed by multiple bits, resulting in signal loss; (2 ) There is a mismatch between different units

Method used

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  • Program-controlled variable four-digit microwave one-chip integrated attenuator
  • Program-controlled variable four-digit microwave one-chip integrated attenuator
  • Program-controlled variable four-digit microwave one-chip integrated attenuator

Examples

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Effect test

Embodiment 1

[0039] Embodiment 1: A program-controlled variable four-bit microwave monolithic integrated attenuator with a symmetrical structure

[0040] Such as figure 1 As shown, a program-controlled variable four-bit microwave single-chip integrated attenuator is characterized in that: it is composed of an input port standing wave adjustment module, a microwave attenuation module, an output port standing wave adjustment module and a control module 21;

[0041] The input port standing wave adjustment module is composed of cascaded first to third level input port standing wave adjustment circuits; the first to third level input port standing wave adjustment circuits have the same structure, wherein the first level input port standing wave The regulating circuit is composed of a first standing wave regulating circuit unit 1 and a first control switch 2 connected in series;

[0042] The microwave attenuation module is composed of first to fourth stages of microwave attenuation circuits an...

Embodiment 2

[0055] Embodiment 2: A program-controlled variable four-bit microwave monolithic integrated attenuator with an asymmetric structure

[0056] A program-controlled variable four-bit microwave single-chip integrated attenuator is characterized in that: it is composed of an input port standing wave adjustment module, a microwave attenuation module, an output port standing wave adjustment module and a control module 21;

[0057] The input port standing wave adjustment module is composed of cascaded first to third level input port standing wave adjustment circuits; the first to third level input port standing wave adjustment circuits have the same structure, wherein the first level input port standing wave The regulating circuit is composed of a first standing wave regulating circuit unit 1 and a first control switch 2 connected in series;

[0058] The microwave attenuation module is composed of first to fourth stages of microwave attenuation circuits and microwave amplitude balance...

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PUM

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Abstract

The invention discloses a program-controlled variable four-digit microwave one-chip integrated attenuator. The attenuator is composed of an input port standing wave adjusting module, a microwave attenuation module, an output port standing wave adjusting module and a control module (21); impedances of all the ports are normalized to 50 ohms; and the ports can be utilized in cascade connection to realize high attenuation. The attenuator provided in the invention has the following advantages that: all attenuation networks are in parallel connection, so that there are few losses on a microwave signal; all control switches and all microwave single-pole single-throw switches employ GaAs field effect transistors, which are extremely small, so that the switch performances are good and a working bandwidth of the attenuator is very wide; an attenuation circuit and a microwave amplitude balancing circuit are in parallel connection, so that the attenuation in a whole working frequency band is substantially balanced and flat; there is no rule for attenuation control coding, so that there is no great influence on results caused by deviation of a certain digit; And introduction of a novel structure enables sensitiveness of the technology to be reduced and a chip yield to be improved from 60% to 80%.

Description

technical field [0001] The invention relates to a microwave single-chip integrated circuit, in particular to a program-controlled variable four-bit microwave single-chip integrated attenuator. Background technique [0002] Digital attenuators are commonly used components in microwave communication systems. A digital attenuator is usually formed by cascading unit attenuation networks with different attenuation quantities, and various attenuation quantities can be realized through the combination of different units, thereby realizing the control and processing of signals. The traditional attenuator uses PIN or GaAs MESFET as the core switch control device. The idea is to achieve unit attenuation by controlling the attenuation network, and then cascade to form the required multi-bit attenuator, and realize the signal through the opening and closing of the switch channel. Attenuation and non-attenuation. And the control code corresponding to the traditional attenuator is a sta...

Claims

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Application Information

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IPC IPC(8): H03H7/03
Inventor 王会智
Owner THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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